Who makes a 39 tooth rear sprocket?

[Aaron_Silidker]

Seen em on ebay all the time, but never in catalogs, who makes them?

Thanks

[kawidual]

www.sprocketspecialists.com can probably make you one.

I almost got a 41 from them until I found out JT makes them in steel, not sure about the 39.

[bobbyward]

with 39 on the rear you would have 4 & 5th as a overdrive

i have 41's on the rear of mine, if you find 39's i would like to hear how

it works as i think mine can go slightly higher on gearing yet i think , it

has 15/41's now, not sure of my rpm's but i would still like to lower them

at 55-60 mph as mine is just 99 % street, the 1% is when i miss a corner or get ran off the road...................!

thanks

[bushwhacker]

Speeds at 7500 rpm's with 15/39 gearing and stock rear tire -

km/h mph

51 32

68 42

86 53

108 67

136 85

[Lonster]

Sprocket specialists make them down to a 32 (I think) for the DRZ. I have a 38 comming tomorrow for my SM. It is the aluminum one that has been hardened and lightened, so it should reduce both my rear un-sprung weight and my rotating mass (better acceleration).

Lonster

[Aaron_Silidker]

Thanks lonestar. Even with 15-41 I want my r's lower for pure street driving.

[Oshow348]

I believe Vortex makes them down that low.

[VinnyL28]

I am running a 14-36...great on the highway!!

[Donkeyjyna]

I've had a fully treated SprocketSpecialist 39 tooth on mine for a while now. I like it better than stock for sure. And nothing looks as cool as a black sprocket and a gold chain.

[wft2019]

Got my 39 aluminum from SprocketSpecialists. Cruises really nice on the highway now. Putting around on city streets(35-50mph) is much more discreet now too, with a loud Yosh.

[MJBruns]

Krause Racing (sidewinder ads in all the MX mags) made a 36,38,40 tooth rear for mine the 38 is what I have now and its much better. I am doing all the engine mods now and will try the 36 next.

Mike Bruns 2005 SM